Carbureter.



PATENTED JULY 24, 1906.

J, P. KEMP. GARBURETER. APPLICATION FILED JULY 8. 1905.

511 wauoz attorney o N "Ppi Incase@ ANTTED STTES PATENT .iABEZ r.- KnMr, or simmons, Meerman.

GARBURETEH.

no. sears?.

To a/ZZ wiz/0m it may concern:

more, in the State of Maryland, have invented certain new and useful improvements in Cari b ureters, of which the following is a specification` This invention relates to improvements in carbureters for internal-combustion engines; and it includes an improved construction and arrangement of artsV whereby the proportions of air and uid fuel passing into the engine may be rea ily adjusted to make the most eective explosive mixture` and the quantities of air and li uid fuel in proper proportions may be varie power of the engine. The details of construction and the various advantages of my invention will be clear from the following speciiication, taken in connection withthe accompanying drawings, in which- Figure 1 is a central vertical section l through the carbureter, and Fig. 2is a side elevation of the same looking from the right in Fig. 1.

Referring to the drawings, A indicates the casing of the carbureter, which is provided with air-inlet openings AB, an opening C for the admission of gasolene or other liquid fuel, and an exhaust opening or port D. Aspring pressed induction or check valve E is arranged between the mixing-chamber F and the exhaust-port D. This valve, as shown, has a conical upper surface of com aratively large area, andthe valve is norma y pressed upward against the seat 1 in th'e valve-casing by means of a coiled spring 2. The stem e of the valve E, as shown, is tubular and is movable vertically within 'an o ening 3 in a vertically-adjustable sleeve 4, aving a shoulder 5, upon which the lower end of the spring 2 rests.y The lower portion of the ad'ustingsleeve 4, as shown, is eXt'eriorly t readed and iits within a threaded opening in the cap a, which closesv .the lower end of the'carbureter-casing and forms a part thereof.' A locknut 6 is provided for holding the adjustable sleeve in any desired position. By properly adjusting the sleeve 4 the spring-pressure o the induction or check yvalve E maybe adjusted so that the valvewill operate with slight suction from the engine or the spring- Specication of Letters Patent.

dElpplimition tiled July 8, 1905. Serial No. 288,766.

to vary the speed or j Patented July 24:, 11906.

pressure may be increased to any desired extent.

Within thel tubular valve-stem c is arranged a compression-spring 7, which is supported by a sto or sup ort 8, threaded into the lower end o said va ve-stem, and the upper end of said spring bears against the head of a needle-valve 9, which projects upwardly through a guide-opening 10 at the center of the valve E. The upper pointed end of this latter valve normally iits against a seat 11 at the4 lower terminal of a assage-way 12 for liquid 'fuel in an adjustab e plug G. This adjustable plug, as shown, has a threaded connection 1 3 with a fixed sleeve H and extends through said sleeve into the mixing-chamber.

.The sleeve H, as shown, is integral with the casing A. Suitable stuffing-boxes h and h are arranged at the top and bottom of the sleeve H to prevent leakage between the plug and sleeve. The plug G has an annular recess 14, which registers with the fuel-inlet opening C in the casing, and this recess is of such len th that in all ordinary adjustments of the p ug the recess will register with the opening C, and thus' admit fuel to the passage-way 12 through a lateral opening 12', connecting the upper end of said passageway with the recess 14.

The plug G may be turned by means of a handle or throttle lever ll, Vwhich is adjustably secured to the upper end of the plug b suitable means, such as a set-screw 15. horizontal movement of the lever ll causes the plug G to rotate in its threaded bearings 13, and the plug is thus adjusted vertical y relatively to the fuel-valve 9. The admission of air through the ports B is regulated by a circular valve or damper (l,

,mounted upon a horizontal pivot-pin 16 and having segments y', which are adapted to open or close the ports B, which are of correspondin shape, when said valve is moved by means o an arm 17. movement ofthe airvalve through an angle of ninet degrees entirely opens or closes the ports The arm 17 is arran ed so that when the lever i is moved to a just the plu G up or down the air-admission valve .l wi be simultaneously moved to increase or decrease the admission of air to the mixing-chamber. As shown, the. arm 17 has a loop or slot 17, through which the lever l entends, so that the two move together. To prevent the loop from binding on the lever I, the arm 17 may be arranged to turn about its axis in-the bear ing 17 b, by which it is connected to thevalve J, as shown. Any other suitable means may be employed for connecting the valve J vand plug G, so that they will turn to ether.

The operation is as follows: When t e engine is started by hand in the usual manner, the induction or check valve E is drawn downward on the suction-stroke of the en- -grine and the fuel-valve 9 is also moved awsy om its seat at the lower end of the plug thus admitting li `uid fuel through the passage-way 12 to t e rmixin chamber. The amount of fuel admitted to t e mixing-chamber at each suction-stroke depends upon the length of time the valve 9 remains oli' of its seat, and this in turn depends upon the adjustment of the plu G. In order to adjust the device so that t e proper proportions of the lever l is again secured to the plug G by means of the set-screw 15 or other means provided for the urpose. The pitch of the threads 13 and tiie o enings in the valve J and the levers-or han les l and 17 are so proportioned that after the device has been adjusted to obtain the proper mixture the proportions of air and| liquid fuel admitted to the mixing-chamber will remain substantially the same thereafter when the plug G and valve J are moved together by the handle or lever I. The quantities of air and liquid fuel admitted to the mixing-chamber may thus be varied to vary the power or speed ofthe engine without varying the proportions of air and liquid.

`It will be evident that in adjusting the device to obtain the proper pro ortions of air and li uid fuel the converse 4o the above-describe method may be followed-that is,

the plug G may remain iixed, while the valvel J is adjusted until the proper proportions are obtained, and lever l may then be secured to the plug, so that the plug and valve will operate together.

.In order to prevent the throttle-lever from sliding down on the adjustable plug when the set-screw 15 is loosened, the plug is provided with an .annular recess 15, into which the end of the set-screw extends to support the lever.

Having described 'my invention, what l claim, and desire to secure by Letters Patent, is-

1. In a carbureter for explosive-engines, a casing havin a mixing-chamber provided with air and el inlet openings, a verticallyarranged adjustable plug extending through the upper part of sald casing into said mixing-chamber and having a passage-way extending from said fuel-inlet opening tothe lower end of the plug, a s ring-pressed checkvalve, having a conica upper surface, arran ed below said pl'u and normally closing thelowerend of'said c amber, said valve being arranged to open' downwardly by atmospheric pressure, a sprin -presse'd fuel-valve supported by and mova le with said checkvalve and normally vclosing the end ci said passage-way, a valve for said air-inlet opening and means for simultaneously adjusting said plug and air-inlet valve to vary the quantity of explosive mixture.

2. In a carbureter for explosive-e ines a casing having a mixing-chamber and aving a vertically-arranged sleeve extending into said chamber, said casing having also a tuel inlet opening extending through the Wall of said sleeve and an air-inlet opening, a plug havin a threaded connection with the interior o: said sleeve, said plug andlsleeve having an annular recess registering with said fueleinlet opening and said plug having a passage-way extending from said recess to the lower end of the plu a spring-pressed check-valve arranged 'be ow said pl and normally closing the lower 'end ol said c -amber, a fuel-valve movable with 'said checle valve and normally closin the lower end ci.

said passage-way, an air-in et valve movable about a horizontal axis andhaving an arm attached thereto, and a lever connected to said plug and engagin said arm.k

3. In a carbureter or explosive-engines a casing having a mixingvchamber and aving a vertically-arranged sleeve extending into said chamber, said casing having also a fuelinlet opening extending through the wall of said sleeve and an air-inlet opening, a plug havin a threaded connection with the interior o' said sleeve, said plu and sleeve having an annular recess there etween registering with said fuel-inlet openin and said pl having a assage-way exten ing from sai recess `to tlie lower end of the plug, a springpressed check-valve arranged below said plu and normally closing the lower 'endof sai chamber, a fuel-valve movable with said check-valve and normally closing the lower end of said passage-way, an air-inlet valve movable about a horizontal axis and having an arm attached thereto, and a lever adjustably connected to said plug and engaging said arm.

d. ln a carbureter for ex losive-enginee, a casing having a g-cf'amber provided IIO with an, air-inlet port at one side, an airsaid passageway, and a lever Connected to valve rotatable upon a horizontal axis for said plug and operatively en aging said arm. to

opening and closing said port, an arm pro- In testimony whereof I a my signature jecting from said valve at right angles to its in presence of two witnesses.

axis, a threaded plug extending vertically JABEZ P. KEMP. through said casing and having a passage- Witnesses-2 Way for conducting liquid fuel into the mlx- JOHN A. HENKUS,

ing-chambena fuel-valve normally closing Riom). H. BAYARD. 

